SHOW_ADDED = 1; // set 0 if you no need show
Offset_X = -10;
Offset_Y = -30;
/**
 * Subsys_JsHttpRequest_Js: JavaScript DHTML data loader.
 * (C) 2005 Dmitry Koterov, http://forum.dklab.ru/users/DmitryKoterov/
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * See http://www.gnu.org/copyleft/lesser.html
 *
 * Do not remove this comment if you want to use script!
 *
 * This library tries to use XMLHttpRequest (if available), and on
 * failure - use dynamically created <script> elements. Backend code
 * is the same for both cases.
 *
 * @author Dmitry Koterov
 * @version 3.29
 */

function Subsys_JsHttpRequest_Js() { this._construct() }
(function() { // to create local-scope variables
    var COUNT       = 0;
    var PENDING     = {};
    var CACHE       = {};

    // Called by server script on data load.
    Subsys_JsHttpRequest_Js.dataReady = function(id, text, js) {
        var undef;
        var th = PENDING[id];
        delete PENDING[id];
        if (th) {
            delete th._xmlReq;
            if (th.caching) CACHE[th.hash] = [text, js];
            th._dataReady(text, js);
        } else if (typeof(th) != typeof(undef)) {
            alert("ScriptLoader: unknown pending id: "+id);
        }
    }

    Subsys_JsHttpRequest_Js.prototype = {
        // Standard properties.
        onreadystatechange: null,
        readyState:         0,
        responseText:       null,
        responseXML:        null,
        status:             200,
        statusText:         "OK",

        // Additional properties.
        session_name:       "osCsid",  // set to SID cookie or GET parameter name
        responseJS:         null,         // JavaScript response array/hash
        caching:            false,        // need to use caching?

        // Internals.
        _span:              null,
        _id:                null,
        _xmlReq:            null,
        _openArg:           null,
        _reqHeaders:        null,

        dummy: function() {}, // empty function

        abort: function() {
            if (this._xmlReq) return this._xmlReq.abort();
            if (this._span) {
                this.readyState = 0;
                if (this.onreadystatechange) this.onreadystatechange();
                this._cleanupScript();
            }
        },

        open: function(method, url, asyncFlag, username, password) {
            this._openArg = {
                'method':    method,
                'url':       url,
                'asyncFlag': asyncFlag,
                'username':  username,
                'password':  password
            };
            this._id = null;
            this._xmlReq = null;
            this._reqHeaders = [];
            return true;
        },

        send: function(content) {
            var id = (new Date().getTime()) + "" + COUNT++;

            // Build QUERY_STRING from query hash.
            var query = this._hash2query(content);

            // Append SID to original URL now.
            var url = this._openArg.url;
            var sid = this._getSid();
            if (sid) url += (url.indexOf('?')>=0? '&' : '?') + this.session_name + "=" + this.escape(sid);

            // Solve hash BEFORE appending ID.
            var hash = this.hash = url + '?' + query;
            if (this.caching && CACHE[hash]) {
                var c = CACHE[hash];
                this._dataReady(c[0], c[1]);
                return false;
            }

            // Try to use XMLHttpRequest.
            this._xmlReq = this._obtainXmlReq(id, url);

            // Pass data in URL (GET, HEAD etc.) or in request body (POST)?
            var hasSetHeader = this._xmlReq && (window.ActiveXObject || this._xmlReq.setRequestHeader);
            var href, body;
            if (this._xmlReq && hasSetHeader && (""+this._openArg.method).toUpperCase() == "POST") {
                // Use POST method. Pass query in request body.
                // Opera 8.01 does not support setRequestHeader, so no POST method.
                this._openArg.method = "POST";
                href = url;
                body = query;
            } else {
                this._openArg.method = "GET";
                href = url + (url.indexOf('?')>=0? '&' : '?') + query;
                body = null;
            }

            // Append ID: a=aaa&b=bbb&<id>
            href = href + (href.indexOf('?')>=0? '&' : '?') + id;

            // Save loading script.
            PENDING[id] = this;

            if (this._xmlReq) {
                // Open request now & send it.
                // In XMLHttpRequest mode request URL MUST be ended with "<id>-xml".
                var a = this._openArg;
                this._xmlReq.open(a.method, href+"-xml", a.asyncFlag, a.username, a.password);
                if (hasSetHeader) {
                    // Pass pending headers.
                    for (var i=0; i<this._reqHeaders.length; i++)
                        this._xmlReq.setRequestHeader(this._reqHeaders[i][0], this._reqHeaders[i][1]);
                    // Set non-default Content-type. We cannot use
                    // "application/x-www-form-urlencoded" here, because
                    // in PHP variable HTTP_RAW_POST_DATA is accessible only when
                    // enctype is not default (e.g., "application/octet-stream"
                    // is a good start). We parse POST data manually in backend
                    // library code.
                    this._xmlReq.setRequestHeader('Content-Type', 'application/octet-stream');
                }
                // Send the request.
                return this._xmlReq.send(body);
            } else {
                // Create <script> element and run it.
                this._obtainScript(id, href);
                return true;
            }
        },

        getAllResponseHeaders: function() {
            if (this._xmlReq) return this._xmlReq.getAllResponseHeaders();
            return '';
        },

        getResponseHeader: function(label) {
            if (this._xmlReq) return this._xmlReq.getResponseHeader(label);
            return '';
        },

        setRequestHeader: function(label, value) {
            // Collect headers.
            this._reqHeaders[this._reqHeaders.length] = [label, value];
        },


        //
        // Internal functions.
        //

        // Constructor.
        _construct: function() {},

        // Do all work when data is ready.
        _dataReady: function(text, js) { with (this) {
            if (text !== null || js !== null) {
                readyState = 4;
                responseText = responseXML = text;
                responseJS = js;
            } else {
                readyState = 0;
                responseText = responseXML = responseJS = null;
            }
            if (onreadystatechange) onreadystatechange();
            _cleanupScript();
        }},

        // Create new XMLHttpRequest object.
        _obtainXmlReq: function(id, url) {
            // If url.domain specified, cannot use XMLHttpRequest!
            // XMLHttpRequest (and MS ActiveX'es) cannot work with different domains.
            if (url.match(new RegExp('^[a-z]+://', 'i'))) return null;

            // Try to use built-in loaders.
            var req = null;
            if (window.XMLHttpRequest) {
                try { req = new XMLHttpRequest() } catch(e) {}
            } else if (window.ActiveXObject) {
                try { req = new ActiveXObject("Microsoft.XMLHTTP") } catch(e) {}
                if (!req) try { req = new ActiveXObject("Msxml2.XMLHTTP") } catch (e) {}
            }
            if (req) {
                var th = this;
                req.onreadystatechange = function() {
                    var s = req.readyState;
                    if (s == 4) {
                        // Avoid memory leak by removing closure.
                        req.onreadystatechange = th.dummy;
                        // Remove possible junk from response.
                        var responseText = req.responseText;
                        try {
                            // Call associated dataReady().
                            eval(responseText);
                        } catch (e) {
                            Subsys_JsHttpRequest_Js.dataReady(id, "JavaScript code generated by backend is invalid!\n"+responseText, null);
                        }
                    } else {
                        th.readyState = s;
                        if (th.onreadystatechange) th.onreadystatechange()
                    }
                };
                this._id = id;
            }
            return req;
        },

        // Create new script element and start loading.
        _obtainScript: function(id, href) { with (document) {
            var span = null;
            // Oh shit! Damned stupid fucked Opera 7.23 does not allow to create SCRIPT
            // element over createElement (in HEAD or BODY section or in nested SPAN -
            // no matter): it is created deadly, and does not respons on href assignment.
            // So - always create SPAN.
            span = body.appendChild(createElement("SPAN"));
            span.style.display = 'none';
            span.innerHTML = 'Text for stupid IE.<s'+'cript></' + 'script>';
            setTimeout(function() {
                var s = span.getElementsByTagName("script")[0];
                s.language = "JavaScript";
                if (s.setAttribute) s.setAttribute('src', href); else s.src = href;
            }, 10);
            this._id = id;
            this._span = span;
        }},

        // Remove last used script element (clean memory).
        _cleanupScript: function() {
            var span = this._span;
            if (span) {
                this._span = null;
                setTimeout(function() {
                    // without setTimeout - crash in IE 5.0!
                    span.parentNode.removeChild(span);
                }, 50);
            }
            return false;
        },

        // Convert hash to QUERY_STRING.
        _hash2query: function(content, prefix) {
            if (prefix == null) prefix = "";
            var query = [];
            if (content instanceof Object) {
                for (var k in content) {
                    var v = content[k];
                    if (v == null || ((v.constructor||{}).prototype||{})[k]) continue;
                    var curPrefix = prefix? prefix+'['+this.escape(k)+']' : this.escape(k);
                    if (v instanceof Object)
                        query[query.length] = this._hash2query(v, curPrefix);
                    else
                        query[query.length] = curPrefix + "=" + this.escape(v);
                }
            } else {
                query = [content];
            }
            return query.join('&');
        },

        // Return value of SID based on QUERY_STRING or cookie
        // (PHP compatible sessions).
        _getSid: function() {
            var m = document.location.search.match(new RegExp('[&?]'+this.session_name+'=([^&?]*)'));
            var sid = null;
            if (m) {
                sid = m[1];
            } else {
                var m = document.cookie.match(new RegExp(s='(;|^)\\s*'+this.session_name+'=([^;]*)'));
                if (m) sid = m[2];
            }
            return sid;
        },

        // Stupid JS escape() does not quote '+'.
        escape: function(s) {
            return escape(s).replace(new RegExp('\\+','g'), '%2B');
        }
    }
})();
function addHandler(object, event, handler) { // Thanks xpoint.ru!
  if (typeof object.addEventListener != 'undefined')
    object.addEventListener(event, handler, false);
  else if (typeof object.attachEvent != 'undefined')
    object.attachEvent('on' + event, handler);
  else {
    var handlersProp = '_handlerStack_' + event;
    var eventProp = 'on' + event;
    if (typeof object[handlersProp] == 'undefined') {
      object[handlersProp] = [];
      if (typeof object[eventProp] != 'undefined')
        object[handlersProp].push(object[eventProp]);
      object[eventProp] = function(e) {
        var ret = true;
        for (var i = 0; ret != false && i < object[handlersProp].length; i++)
          ret = object[handlersProp][i](e);
        return ret;
    } }
    object[handlersProp].push(handler);
} }
function removeHandler(object, event, handler) { // Thanks xpoint.ru!
  if (typeof object.removeEventListener != 'undefined')
    object.removeEventListener(event, handler, false);
  else if (typeof object.detachEvent != 'undefined')
    object.detachEvent('on' + event, handler);
  else {
    var handlersProp = '_handlerStack_' + event;
    if (typeof object[handlersProp] != 'undefined') {
      for (var i = 0; i < object[handlersProp].length; i++) {
        if (object[handlersProp][i] == handler) {
          object[handlersProp].splice(i, 1);
          return;
} } } } }
/**
  AJAXBuyNow v2.0

  author Weretennikoff Andrew aka Medreces medreces@yandex.ru

  Released under the GNU General Public License
*/
var x, y;
var loadingImage = new Image();
var okImage = new Image();
loadingImage.src = "images/loading.gif";
okImage.src = "images/ok.gif";

if (window.opera || (navigator.userAgent.indexOf('MSIE') > -1)) { //IE + Opera
  getM_x = function () { return event.clientX + document.body.scrollLeft; }
  getM_y = function () { return event.clientY + document.body.scrollTop; }
} else { // Mozilla
  addHandler(document, 'mousemove', function(e) {
    x = e.pageX;
    y = e.pageY;
  });
  getM_x = function () { return x; }
  getM_y = function () { return y; }
}
function showOk() {
  var imgLoading = document.getElementById("_loading_");
  with (imgLoading) {
    src = okImage.src;
    style.visibility = "visible";
} }

function hideOk() {
  if(document.getElementById("_loading_")) document.getElementById('_loading_').style.visibility = "hidden";
  removeHandler(document, 'mousemove', hideOk);
}
function showLoading() {
  var imgLoading = document.getElementById("_loading_");
  if(!imgLoading) {
    imgLoading = document.createElement("img");
    with(imgLoading) {
      id = "_loading_";
      style.position = "absolute";
      style.visibility = "hidden";
    }
    document.body.appendChild(imgLoading);
  }
  with(imgLoading) {
    src = loadingImage.src;
    style.left = (getM_x() + Offset_X) + "px";
    style.top = (getM_y() + Offset_Y) + "px";
    style.visibility = "visible";
} }
function hideLoading() {
  if(document.getElementById("_loading_")) document.getElementById("_loading_").style.visibility = "hidden";
}

function doBuyNowGet( link ) {
  showLoading();
  var reqAddCart = new Subsys_JsHttpRequest_Js();
  reqAddCart.onreadystatechange = function() {
    if (reqAddCart.readyState == 4) {
      if (reqAddCart.responseJS) {
        document.location.href = reqAddCart.responseJS.ajax_redirect;
        return;
      }
      else {
        document.getElementById('divShoppingCard').innerHTML = '<table border="0" width="100%" cellspacing="0" cellpadding="2">'+(reqAddCart.responseText||'')+'</table>';
        hideLoading();
        if ( SHOW_ADDED ) {
          showOk();
          timerID = setTimeout( "addHandler(document, \'mousemove\', hideOk)", 500);
        }
      }
    }
  }
  reqAddCart.caching = false;
  reqAddCart.open('GET', link, true);
  reqAddCart.send(null);
}

function doAddProduct(form) {
  showLoading();
  var reqAddCart = new Subsys_JsHttpRequest_Js();
  reqAddCart.onreadystatechange = function() {
    if (reqAddCart.readyState == 4) {
      if (reqAddCart.responseJS) {
        document.location.href = reqAddCart.responseJS.ajax_redirect;
        return;
      }
      else {
        document.getElementById('divShoppingCard').innerHTML = '<table width="100%">'+(reqAddCart.responseText||'')+'</table>'
        if ( SHOW_ADDED ) {
          showOk();
          timerID = setTimeout( "addHandler(document, \'mousemove\', hideOk)", 500);
        }
      }
    }
  }
// �������� ��� �������� �����:
  var senddata = new Object();
  var fe = form.elements;
  for(var i=0 ; i<fe.length ; i++) {
    if ( fe[i].type=="radio" || fe[i].type=="checkbox" ) {
      if ( fe[i].checked ) senddata[fe[i].name] = fe[i].value;
    } else {
      senddata[fe[i].name] = fe[i].value;
    }
  }
  var url = 'ajax_shopping_cart.php?' + ( senddata.products_id ? 'products_id='+senddata.products_id+'&' : "" ) + 'action=add_product';

  reqAddCart.caching = false;
  reqAddCart.open( form.method, url, true);
  reqAddCart.send( senddata );
  return false;
}
